Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-10-14
Physics
High Energy Physics
High Energy Physics - Experiment
43 pages, 40 figures
Scientific paper
There is accumulating evidence for a difference between neutrino and antineutrino oscillations at the $\sim 1$ eV$^2$ scale. The MiniBooNE experiment observes an unexplained excess of electron-like events at low energies in neutrino mode, which may be due, for example, to either a neutral current radiative interaction, sterile neutrino decay, or to neutrino oscillations involving sterile neutrinos and which may be related to the LSND signal. No excess of electron-like events ($-0.5 \pm 7.8 \pm 8.7$), however, is observed so far at low energies in antineutrino mode. Furthermore, global 3+1 and 3+2 sterile neutrino fits to the world neutrino and antineutrino data suggest a difference between neutrinos and antineutrinos with significant ($\sin^22\theta_{\mu \mu} \sim 35%$) $\bar \nu_\mu$ disappearance. In order to test whether the low-energy excess is due to neutrino oscillations and whether there is a difference between $\nu_\mu$ and $\bar \nu_\mu$ disappearance, we propose building a second MiniBooNE detector at (or moving the existing MiniBooNE detector to) a distance of $\sim 200$ m from the Booster Neutrino Beam (BNB) production target. With identical detectors at different distances, most of the systematic errors will cancel when taking a ratio of events in the two detectors, as the neutrino flux varies as $1/r^2$ to a calculable approximation. This will allow sensitive tests of oscillations for both $\nu_e$ and $\bar \nu_e$ appearance and $\nu_\mu$ and $\bar \nu_\mu$ disappearance. Furthermore, a comparison between oscillations in neutrino mode and antineutrino mode will allow a sensitive search for CP and CPT violation in the lepton sector at short baseline ($\Delta m^2 > 0.1$ eV$^2$).
Aguilar-Arevalo Alexis A.
de Water Ruth Van
Djurcic Zelimir
Ford Richard
Garvey Gerald T.
No associations
LandOfFree
A Letter of Intent to Build a MiniBooNE Near Detector: BooNE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Letter of Intent to Build a MiniBooNE Near Detector: BooNE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Letter of Intent to Build a MiniBooNE Near Detector: BooNE will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-19767